It's been a busy day for most teams on the first day of free agency. The Sharks have been pretty quiet so far, but did improve their bottom pair with Schlemko, who played with the Devils last season. He played in Phoenix/Arizona for seven years before bouncing around to Dallas, Calgary, and then New Jersey.

Four years is a bit long for a bottom-pairing defenseman, but the $2.1mil cap hit is very good. Schlemko is a puck-moving D who can play both sides, and on the second PP unit. His underlying numbers are terrific despite playing on a weak Devils team.

This signing could mean a couple things for the Sharks defensive group. First, the organization may not trust Dylan DeMelo to be a regular on the third pair. We saw Roman Polak and Brenden Dillon get exposed in the Stanley Cup Final, and it could be that Doug Wilson wanted a larger upgrade on Polak.

Second, Brenden Dillon may be on the move in the near future. He struggled for much of the season and has not been the reliable bottom-4 defenseman the Sharks thought they were getting after trading Jason Demers. Dillon may bounce back with Schlemko as his partner, but it's tough to see both him and DeMelo in the lineup after the free agent acquisition today. If he's not moved, he will be exposed in the expansion draft and could be lost to Las Vegas.

Solid signing of an underrated player by Wilson. Here's what he had to say: "David is a solid puck-moving defenseman with good speed who can play the game at both ends. He is coming off of a very productive season in New Jersey and we think he will fit well with our group."